Are these acts the 2015 Super Bowl performance frontrunners?

Rihanna, Katy Perry and Coldplay have reportedly emerged as the frontrunners to perform at the 2015 Super Bowl halftime show.

The musicians are under consideration to perform at the game in Glendale, Ariz., in February, but they are being asked to donate a portion of their subsequent touring income to the National Football League for the first time, according to the Wall Street Journal.

Katy Perry "The Prismatic World Tour" - Washington D.C.

Katy Perry(Photo by Kevin Mazur/WireImage)

In the past, performers have not paid or been paid for their top billing during the sports telecast, but they have been compensated for travel and production expenses.